Improvement in constructing walls



P A. & I. S. KNAPP.

couswmrcnm WALLS.

No.176,ZZ9. Patented Apri1l8, 1876 jzyi.

I I I L j q A WITNESSES ".FETERS FHOTO-LITHOGRAPHER, WASHINGTON, D G.

UNITED STATES PATENT QFFIOE.

PHILO A. KNAPP AND IRA S. KNAPP, OF DANBURY, CONNECTICUT.

IMPROVEMENT IN CONSTRUCTJNG WALLS.

Specification forming part of Letters Patent No. 176,229, dated April18, 1876; application filed March 13, 1876.

To all whom it may concern:

Be it known that we, PHILo A. KNAPP and IRA S. KNAPP, of Danbury,Fair-field county,

Connecticut, have invented a new and useful Improvement in theConstruction of Houses, of which the following is a specification:

Our invention consists in the construction of the walls and partitionsof houses and oth er buildings, of boxes without top and bottom, andfilled with loose gravel or other approved filling material, the boxesbeing placed one upon another and tied, keyed, or otherwise fastenedtogether and forming blocks, in imitation of stone or otherbuilding-blocks.

Figure 1 is a side elevation of a wall constructed according to'ourinvention. Fig.2 is a plan of unfinished Walls and partitions,

' showing a top view of a course of blocks, and

Fig. 3 is a section of a box comprising, when filled with loose gravelor other material, one of the building-blocks.

Similar letters of reference indicate corresponding parts.

A represents the box having 4 sides, but neither top or bottom, the samebeing made of boards of wood, suitably fastened together in suitablesize and shape for a building-block, which is to be used with others oflike form, or

of such other form as may be preferred, for ornamental design, or fordifferent parts of the building, the blocks being placed one on anotherin the manner of other buildingblocks, and being filled with anyapproved material, as loose gravel, coarse sand, and the like, and beingkeyed as at C or doweled or otherwise connected and fastened.

The foundation may be either stone or wood, as preferred.

The advantages are cheaper cost for equal quality, the joints are lessliable to open by

